On Wed, Oct 5, 2011 at 2:35 PM, Curt Hagenlocher <cu...@microsoft.com> wrote:
> Yep, .NET 2.0, 3.0 and 3.5 all share the same fundamental CLR and the BCL 
> bits are strictly additive. A simple cast is not sufficient; the code will 
> need modification. One approach would be to insert a 3.5-only adapter 
> function which does something like this:
>
> IEnumerable<object> Convert(IEnumerable<MutableString> collection) {
>    foreach (var item in collection) {
>        yield return item;
>    }
> }
>
> (I'd need to refer to the context of the code to make any other suggestions.)

Ok, thanks.

> Is downlevel-framework support still a goal for IronRuby? I seem to recall 
> that IronPython 2.7 is .NET 4.0-only.

There are many systems still using Mono 2.6.7 which is CLRv2. However,
I think that this may change sooner than later as distros like Ubuntu
are moving on up.

-Doug

> -----Original Message-----
> From: ironruby-core-boun...@rubyforge.org 
> [mailto:ironruby-core-boun...@rubyforge.org] On Behalf Of Doug Blank
> Sent: Wednesday, October 05, 2011 10:48 AM
> To: ironruby-core@rubyforge.org
> Subject: Re: [Ironruby-core] IronRuby v2Release xbuild is failing
>
> On Wed, Oct 5, 2011 at 11:17 AM, Curt Hagenlocher <cu...@microsoft.com> wrote:
>> Is "v2Release" intended to target CLRv2? If so, this error is because that 
>> version of C# and the BCL don't support covariance for IEnumerable.
>
> I believe that "v2Release" targets the 3.5 framework (is that the same as 
> CLRv2?), but someone can correct me if I am wrong.
>
> I'm currently running a previous version of IronRuby built for "v2Release", 
> so perhaps there is at least a patch that we can apply (will a simple cast be 
> sufficient?).
>
> I'm trying to build the latest versions of IronRuby and IronPython for 
> inclusion into the next version of Ubuntu. The versions built on
> dlr-0.9 were just removed. However, I must admit that I don't know if people 
> will really need v2Releases... I just thought I'd build them if I could.
>
> -Doug
>
>> -----Original Message-----
>> From: ironruby-core-boun...@rubyforge.org
>> [mailto:ironruby-core-boun...@rubyforge.org] On Behalf Of Jimmy
>> Schementi
>> Sent: Wednesday, October 05, 2011 8:15 AM
>> To: ironruby-core@rubyforge.org
>> Subject: Re: [Ironruby-core] IronRuby v2Release xbuild is failing
>>
>> Can someone sign up to looking into this? After confirming this builds in 
>> .NET and not Mono, I'd first find out if this is a known Mono bug, and then 
>> provide a patch to IronRuby to work-around this.
>>
>> Please let the list know if you want to take this on,
>>
>> ~js
>>
>> On Oct 5, 2011, at 11:10 AM, Doug Blank wrote:
>>
>>> Reported as:
>>> http://ironruby.codeplex.com/workitem/6523
>>>
>>> -Doug
>>>
>>> On Mon, Oct 3, 2011 at 4:22 PM, Doug Blank <doug.bl...@gmail.com> wrote:
>>>> FYI,
>>>>
>>>> When trying to build IronRuby for a v2Release under Mono 2.10.2, I'm
>>>> getting a failure:
>>>>
>>>> % git clone https://github.com/IronLanguages/main.git IronLanguages
>>>> % cd IronLanguages % xbuild Solutions/Ruby.sln
>>>> /p:Configuration="v2Release"
>>>> ...
>>>> Builtins/RangeOps.cs(307,17): error CS0266: Cannot implicitly
>>>> convert type 
>>>> `System.Collections.Generic.IEnumerable<IronRuby.Builtins.MutableString>'
>>>> to `System.Collections.Generic.IEnumerable<object>'. An explicit
>>>> conversion exists (are you missing a cast?)
>>>>
>>>> Building for the regular configuration is fine.
>>>>
>>>> -Doug
>>>>
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